bookmarks: Break the dependency in ui/cocoa.

chrome/browser/bookmarks/bookmark_pasteboard_helper_mac.h

Index: chrome/browser/bookmarks/bookmark_pasteboard_helper_mac.h
diff --git a/chrome/browser/bookmarks/bookmark_pasteboard_helper_mac.h b/chrome/browser/bookmarks/bookmark_pasteboard_helper_mac.h
index 98fe3e1e442a07ad7dac07e97df5e99179d46a03..d5d7797be64737b09fbe478e7583a3997d7677b8 100644
--- a/chrome/browser/bookmarks/bookmark_pasteboard_helper_mac.h
+++ b/chrome/browser/bookmarks/bookmark_pasteboard_helper_mac.h
@@ -7,13 +7,9 @@
 
 #include "base/file_path.h"
 #include "chrome/browser/bookmarks/bookmark_node_data.h"
-#include "ui/gfx/native_widget_types.h"
 
 #if defined(__OBJC__)
-@class NSImage;
 @class NSString;
-#else  // __OBJC__
-class NSImage;
 #endif  // __OBJC__
 
 // This set of functions lets C++ code interact with the cocoa pasteboard
@@ -40,14 +36,6 @@ bool ReadFromPasteboard(PasteboardType type,
 // valid bookmark.
 bool PasteboardContainsBookmarks(PasteboardType type);
 
-// Returns a drag image for a bookmark.
-NSImage* DragImageForBookmark(NSImage* favicon, const string16& title);
-
-// Copies the bookmark nodes to the dragging pasteboard and initiates a
-// drag from the specified view.  |view| must be a |TabContentsViewCocoa*|.
-void StartDrag(Profile* profile, const std::vector<const BookmarkNode*>& nodes,
-               gfx::NativeView view);
-
 }  // namespace bookmark_pasteboard_helper_mac
 
 #if defined(__OBJC__)